Sahih Bukhari Volume 7, Book 62, Hadith Number 153.

Narrated By Jabir : The Prophet, said, “I entered Paradise and saw a palace and asked whose palace is this? They (the Angels) said, “This palace belongs to ‘Umar bin Al-Khattab.’ I intended to enter it, and nothing stopped me except my knowledge about your sense of Ghira (self-respect (O Umar).” ‘Umar said, “O Allah’s Apostle! Let my father and mother be sacrificed for you! O Allah’s Prophet! How dare I think of my Ghira (self-respect) being offended by you?”